Exhaust muffler 1.material; metal 2. for 3KJ,2JA,3YJ,3YK,4JP,AG100,AG50,DIO Exhaust muffler1.material;metal2. 3KJ,2JA,3YJ,3YK,4JP ... ,LEAD,AF18-AF35.GY6125-150. Also CG125-150,AD50,AG100,AX100,GN125-150,GS125,RX115,etc.The main parts is the ... is any question,please feel free to contact with us. Exhaust muffler